Wall charger



FIG. 1 is a first perspective view of a wall charger showing my present design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a third perspective view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 a right side view thereof;

FIG. 8 is a top view thereof; and,

FIG. 9 is a bottom view thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the wall charger that form no part of the claimed design. 

CLAIM The ornamental design for a wall charger, as shown and described. 